Wilwood Narrow Superlite 4R Front Hat Kit 12.88in Drilled 66-75 Ford Bronco Dana 30/44 w/Lines - 140-13304-D

The unsurpassed braking capacity of the Forged Narrow Superlite 4R four-piston caliper serves as the basis of these 12.88" or 14.00" inch big rotor kits for the popular Ford Bronco vehicles. SL4R kits are engineered application specific to these vehicles, providing simplified installation. Each kit is engineered vehicle specific and utilizes the existing hub assembly. Big brake kits offer increased brake capacity and complimentary style with wheel, tire, and suspension upgrades. Optional caliper finishes and rotor designs simplify personalizing the style and braking requirements of any application.

This Part Fits:

Year	Make	Model	Submodel
1975	Ford	Bronco	Custom
1975	Ford	Bronco	Northland
1975	Ford	Bronco	Ranger
1975	Ford	Bronco	Sport
1975	Ford	F-100	Custom
1975	Ford	F-100	Northland
1975	Ford	F-100	Ranger
1975	Ford	F-100	Ranger XLT

Please note image may vary from product, and some items are special order.

Wilwood Engineering is a leader in performance braking systems. They offer rotors, pads, calipers, master cylinders, and even complete brake kits!

About Wilwood Engineering-

Founded in 1977 by Bill Wood, Wilwood Engineering, Inc. has grown to become a leader in designing and manufacturing high-performance disc brake systems. With decades of experience, Wilwood has developed a vast range of brake components and innovative engineering techniques that allow us to create reliable brake systems for virtually any application. Our expertise lies in the rapid development of custom-engineered brake systems, utilizing a unique blend of off-the-shelf and custom-made components.

While we are renowned for crafting brakes for competitive motorsports, our capabilities extend far beyond the racetrack. Wilwood also designs and manufactures braking systems for agricultural machinery, industrial equipment, utility vehicles, snowmobiles, motorcycles, ATVs, and military vehicles, including heavy-duty brakes for the U.S. military’s Humvee. This versatility showcases our commitment to delivering exceptional braking performance across a variety of industries and uses.

Wilwood’s engineering team employs cutting-edge tools such as computer-aided design (CAD), finite element analysis (FEA), and advanced dynamic and cycle testing equipment to ensure that our products deliver the highest levels of performance and reliability. Our proprietary inventory of on-the-shelf components allows us to provide cost-effective, high-quality solutions for even the most complex braking challenges.

As an ISO 9000-compliant company, we pride ourselves on maintaining exceptional quality standards, with extensive experience in achieving original equipment manufacturer (OEM) quality levels at or below 100 parts per million (PPM).

Whether you’re looking for a high-performance brake system for motorsports or a custom solution for industrial and military applications, Wilwood Engineering is committed to delivering unmatched performance, precision, and reliability.

About Fidanza Performance-

​Fidanza Performance, founded in 1997, is a leading US manufacturer of high-quality lightweight aluminum flywheels, precision adjustable cam gears, and high-performance clutches. With nearly 20 years in the automotive performance market, Fidanza is renowned for its expertise and respected globally, offering products for a wide range of vehicles, from European sports cars to modern muscle cars and imports. The company originated in racing, with founder Lou Fidanza's success in the SCCA leading to the creation of specialty parts like aluminum flywheels. Fidanza has since expanded its product line to include cam gears and performance clutches, gaining a loyal customer base and worldwide recognition. In 2023 Fidanza opened the Fidanza Marketplace which sells other manufacturers quality high performance parts!